DIY speakers vertical array a la "pipedreams" syst
Have any of you worked on a multi drivers vertical array type of speakers ...something that would look like a diminutive version of the http://www.nearfieldacoustics.com/The%20System.htm systems ?
What were the results?
i have a suddent interest in knowing why so many people prefer this kind of setup to systems of equivalent quality drivers/enclosures with less in number ...
Anyone has a good ressource for buying excellent drivers ( only the drviers ) and or reviews of such ?
i will need a 15-18" driver for my sub neway , even if i still go with ESLs ..
But the vertical array systems attract me for a single reason, build is easy and it should cost equivalent to electrostatics ( since no need for $$$$ step up transformer but multi drivers need to be purchased ..
I would be considering a desing of a few feet tall with a front face of 12" to 18" maybe with an opened rear for dipole action since they can't reach the front in their resonnat frequency ...mmmm
could be something in the 3 feet tall in total wonder how many driver i could place on that :p
what do you guys think?
then also, about the need to drive all the drivers, will it ask for a really powerfull amplification ? or since all the drivers are working less powerfull to attain the equivalent sound pressure, they thus require less power ?
what do you think of nerafield acoustic theory that having more drivers permits the drivers to be worked at lower power and drivers are more accurate at lower power?
Looks like an incredible project and priced where most anyone can afford a pair. I like the web site too, with the ability to click and view all the stages of Fred's progress as he cut and assembled, all the way to the final product with improved tweeter.
Thanks for the link, that does look great, I worry a little about my cabinet making abilities so I thought a open baffle design would be easier but I think it might be worth the extra effort.
The oft-overlooked issue is driver matching. Pipedreams does it the best they can which is why their speakers are so expensive. Hook a couple of drivers together and shine a strobe light on them with a signal generator to do a frequency sweep and you'll see them go out of phase with respect to each other. The problem goes up exponentially as the number of drivers increases.
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